Judges Jasper Carrott and Dave Spikey were both "extremely impressed" with Richardson's performance.
Richardson has performed at comedy festivals in Leeds, Guildford and Bristol, and has headlined university gigs for Off the Kerb and Avalon.
He has also compèred in the French Alps, headlined in Barcelona, and performed a one-man show in Greece.
He also appeared on Have I Got News for You in December 2009 and October 2010, and was a guest on David Mitchell's The Bubble.
Richardson appeared on the BBC Radio 5 Live show Fighting Talk in February 2010.
He might be good at comic exaggeration but he's obviously a man who feels uncomfortable telling an outright lie.